Why is 28 a composite number

Why is 28 a composite number? A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number. Since 28 cannot be divided by just 1 and 28, it is a composite number.

More Examples Number 26 27 29 30 Composite? Is 28 a composite number? Is 28 an even number? Is 28 an odd number? Is 28 a perfect square? Is 28 a palindrome? Is 28 a Fibonacci number? How is the number 28 written in scientific notation? What is the absolute value of the number 28? What is the negative version of the number 28? Solution: The factors of 9 are 1 x 9, 3 x 3. Example 3: Find all prime numbers between 2 and 9.

Example 4: Find all prime numbers between 10 and Example 5: Find all prime numbers between 20 and Solution 1: The number 31 is prime because its only factors are one and itself.

Exercises Directions: Read each question below. The prime numbers between 40 and 49 are: 42, 43 and 47 41, 43 and 47 43, 45 and 47 None of the above.

The prime numbers between 50 and 59 are: 53 and 59 51 and 59 53 and 57 None of the above. The prime numbers between 60 and 69 are: 63 and 69 61 and 67 60 and 65 None of the above. The prime numbers between 20 and 69 are: 21, 23, 29, 31, 37, 41, 43, 47, 53, 63 and 69 23, 29, 31, 33, 37, 41, 43, 47, 59, 61 and 67 23, 29, 31, 37, 41, 43, 47, 53, 59, 61 and 67 None of the above.

Elementary Math Lessons. Factors and GCF. Multiples and LCM. Primes and Composites. Divisibility Rules. Patterns and Exponents. Practice Exercises. Challenge Exercises. Exponents and Scientific Notation. Factor Tree Game. Number Theory WebQuest. Pre-Made Worksheets. Square Root Calculator.

To understand whether 28 is composite or prime, it is important to find its factors. Yes, since 28 has more than two factors i. In other words, 28 is a composite number because 28 has more than 2 factors. Is 28 a Prime Number? Why is 28 not a Prime Number? Factors of 1, 2, 4, 7, 14, 28 Since 28 has more than 2 factors, we can say that 28 is not a prime number. Problem Statements: Is 28 a Prime Number?

No Is 28 a Composite Number? Yes Is 28 a Perfect Cube? No Multiples of 28 28, 56, 84, , , , , , , Is 28 an Odd Number?